(a) Lake Victoria

(b) Lake Faguibine

(c) Lake Oguta

(d) Lake Volta

Ans: b

Explanation:

The Faguibine system, located in the Tombouktou region in Mali, is a series of five interlinked lakes (Télé, Takara, Gouber, Kamango and Faguibine). The system is fed from the overflows of the Niger River during the rains; and when full, it was among the largest lakes in West Africa, covering approximately 590 km with a total shoreline of 213 kilometres.

In the late 19th century, the floodplain extended over an area of 1,000 km–, however, declining rainfall led to it shrinking to about 90 km² by 2010. Prolonged droughts over the years also led to the lake completely drying up in 1914, 1924 and 1944.

The decline of the Faguibine is an important issue because of its impacts on livelihoods, food security and the resulting collapse of the natural ecosystem. 

Hence, option b is correct.

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